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to wire up aftermarket oil pressure and water temp gauges, you only need 2 wires going into the engine compartment right? one for each sender. everything else splices into the back of the defrost switch. right?
Mine are one wire per. One to the OP sender, and one to the WT sender, then the powers are wired into the radio. Mine are "Glowshifts", work great and cheap
cool, thanks usmc1775. that is what i am going to do. just run one wire to each sender and connect evrything else inside to either the radio like you or the defrost.